PM77423: ssse3: RHEL6.2: segv in __memmove_ssse3_rep

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Segmentation fault occurs for PP on RHEL 6.2
    
    
    The stacktrace  for the segmentation fault points to  ssse3_rep
    and is as below,
    
    __memmove_ssse3_rep [libc.so.6]
    memcmp [rtlib.o]
    main [mem_test.o]
    
    This  version of Purify  works on an
    Intel Xeon E5450 but not on an Intel Xeon E7-4830.
    
    CPU flags for the two platforms:
    E5450 - fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca
    cmov pat
    pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall lm
    constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni
    dtes64
    monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 xsave
    lahf_lm dts tpr_shadow vnmi flexpriority
    E7-4830 - fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca
    cmov pat
    pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm
    constant_tsc arch_perfmon pebs bts xtopology tsc_reliable
    nonstop_tsc
    aperfmperf unfair_spinlock pni ssse3 cx16 sse4_1 sse4_2 popcnt
    hypervisor lahf_lm ida arat dts
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    PurifyPlus is getting the size of a switch table wrong in
    __memcmp_sse4_2, so it fails to patch all of the entries in
    the table. The result is a jump into the middle of
    __memmove_ssse3_rep.
    

Problem conclusion

  • Modified the PurifyPlus instrumentation engine to correctly
    process the switch table in __memcmp_sse4_2.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM77423

  • Reported component name

    PURIFY WIN

  • Reported component ID

    5724G2201

  • Reported release

    701

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-11-20

  • Closed date

    2013-03-30

  • Last modified date

    2013-03-30

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    PURIFY WIN

  • Fixed component ID

    5724G2201

Applicable component levels

  • R701 PSN

       UP



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Document information


More support for:

Rational Purify

Software version:

7.0.1

Reference #:

PM77423

Modified date:

2013-03-30

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